Best Light-Duty: Amazon Basics 20-Foot Extension Cord; Best Retractable Reel: Good Year Extension Cord Reel; ... A 25-foot cord delivers 15 amps, going down to about 10 amps at 100 feet.

The 12 gauge extension cord reel (shown above right) includes a 20 foot extension cord, and is available for $65 on Amazon. It includes one outlet and is rated at 15 amps.